中国激光, 2011, 38 (4): 0402010, 网络出版: 2011-03-31   

基于高精细度光纤滤波器的双波长光纤激光器

Dual-Wavelength Fiber Laser Based on a High Finesse Fiber Ring Filter
作者单位
天津理工大学计算机与通信工程学院智能计算及软件新技术重点实验室及薄膜电子与通信器件重点实验室, 天津 300384
摘要
提出了基于高精细度光纤环形滤波器的双波长窄线宽光纤激光器结构。在单波长光纤激光器的基础上,增加保偏光纤布拉格光栅(PM-FBG)和高精细度的光纤滤波器。其中保偏光纤布拉格光栅作为激光器的波长选择元件,可产生两个波长的激光输出。高精细度的光纤滤波器由两个光耦合器和一段弱抽运的掺铒光纤构成,掺铒光纤产生的增益和光纤时延使滤波器具有梳状谱响应和高精细度,从而抑制激光器产生的不需要的模式,保证输出激光具有窄线宽特性。以980 nm的激光二极管(LD)作为抽运源,得到了室温下单峰最大输出功率5.27 mW和1.02 mW,波长间隔为0.16~0.32 nm可调谐的双波长窄线宽连续激光输出。
Abstract
A dual-wavelength fiber laser with a narrow bandwidth, based on a high finesse fiber ring filter has been proposed. Polarization-maintaining fiber Bragg grating(PM-FBG) and a high finesse fiber ring filter are introduced based on the traditional fiber laser. PM-FBG is used as the wavelength selection device to produce dual-wavelength. The fiber ring filter consists of two optical couplers and a section of weak pumped erbium-doped fiber(EDF). Because of the delay of cavity length and the gain generated by the EDF, the filter has spectral response with a high finesse. The incorporation of the fiber ring filter leads to the suppression of undesirable mode and makes the output laser narrow bandwidth. Under 980 nm LD pumped, the maximum outputs of the two wavelengths are 5.27 mW and 1.02 mW, respectively, at the room temperature. And the wavelength spaces of the two wavelengths are tunable within the range between 0.16 nm and 0.32 nm.
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杨秀峰, 魏芳芳, 童峥嵘, 潘洪刚. 基于高精细度光纤滤波器的双波长光纤激光器[J]. 中国激光, 2011, 38(4): 0402010. Yang Xiufeng, Wei Fangfang, Tong Zhengrong, Pan Honggang. Dual-Wavelength Fiber Laser Based on a High Finesse Fiber Ring Filter[J]. Chinese Journal of Lasers, 2011, 38(4): 0402010.

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